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224e773 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 | //! Weight computation and edge rules
use super::nodes::{AstNode, NodeType};
/// Edge weight rules for inverted AST
pub fn edge_weight(from: &AstNode, to: &AstNode) -> f64 {
match (from.node_type.is_payload(), to.node_type.is_structural()) {
// payload → structural = 0.0 (BLOCKED)
(true, true) => 0.0,
// structural → payload = 0.1 (muted)
(false, true) => 0.1,
// structural → structural = computed routing weight
(false, false) => 0.5,
// payload → payload = 0.0
(true, false) => 0.0,
}
}
/// Verify dangerous patterns (payload trying to control routing)
pub fn has_dangerous_pattern(from: &AstNode, to: &AstNode) -> bool {
// Dangerous: payload node pointing to structural authority node
from.node_type.is_payload() && to.node_type.is_structural()
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn payload_cannot_reach_structural() {
let payload = AstNode::new(NodeType::Word, "hello");
let structural = AstNode::new(NodeType::Intent, "route");
assert_eq!(edge_weight(&payload, &structural), 0.0);
assert!(has_dangerous_pattern(&payload, &structural));
}
#[test]
fn structural_can_reach_payload() {
let structural = AstNode::new(NodeType::Intent, "route");
let payload = AstNode::new(NodeType::Word, "hello");
assert_eq!(edge_weight(&structural, &payload), 0.1);
assert!(!has_dangerous_pattern(&structural, &payload));
}
}
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